CARBKING
Both carbs and intakes are off motors(numbers reversed yea this isn't my first mistake)
the 248 intake manifold #2194002 has 1 & 1/2 " intake carb bolts front & back
the 270 intake mainifold #2194817 has 1 & 5/8 intake carb bolts left & right.
looks like both intakes will bolt on may do as FLEETSIDE try a holley/webber??may not need adapters with 270 intake will see as motor goes back together. thanks Bill